4-x/7=x/9

Solve the equation: 4 − x/7 = x/9

• Clear denominators by multiplying both sides by 63: 63·4 − 63·(x/7) = 63·(x/9) 252 − 9x = 7x
• Solve for x: 252 = 16x → x = 252/16 = 63/4

Answer: x = 63/4 (15.75)

Check: Left = 4 − (63/4)/7 = 4 − 9/4 = 7/4 Right = (63/4)/9 = 7/4 Both sides match.